Hiels a



Ns Al CHRISTENSEN.

ADJUSTABLE SHAFT COUPUNG.

/rPPLlcAnoN FILED JUNE 1, 19H.

1 1 95,940. Patented Aug. 22, 1916.

vente r;

Muffy 'M lOFCE.

ADJUSTAB LE SHAFT-COUYLING.

Application tiled June l, 1911.

To all whom't may concern:

Be it known that 4I, Niels A. Crinis'i-EN- sicN, a citizen ofthe Kingdom of Denmark, residing at.Milwaiikee, in the county of Milwaukee and Stat/e Vof `Wisconsin, have linvented certain new and useful Improvements in Adjustable Shaft-Couplings, of which the following is a specificatiomreference being had to the accompanying drawing,forming a' part thereof..

This Ainvention relates to means for coupling with a driving shaft or member, the armature shaft of a magneto or other driven shaft or member which requires angular adjustment relative tol such driving shaft or member. Its main objects' are to facilitate such adjustment, particularlyv in connection with a coupling 'of the Oldham type, which compensates for lack of axialalinement between the two shafts or members, and generally to improve the construction and operation of devices of this class,

It consists in the construction,` arrangement and combination of parts as hereinafter particularly described and afterward defined in; the appended claims.

In the accompanying drawing likechara.

ters designate the sameparts in "the several figures.

Figurel is an end elevation ofan internal combustion engine with a magneto and magneto driving shaft to which a coupling embodying the invention is applied, certain parts of' the casing being broken away; Fig. 2 is an axial section of the coupling on the line A. A,`Fig. 3; Fig. 3 is a plan view or elevation thereof; Fig. i is a cross 'section on the line B. B, Fig. 2; and Fig. 5 vis an end elevation of the adjustable coupling piece on a plane indicated by the line C, C,Fig. i2.

Referring to Fig. 1, by which for the purpose of illustration, the coupling in one of the preferred forms ofl its embodiment is shown in connection with the magneto of an internal combustion engine, c designates the cylinder, 7/ the crank shaft and the mag- 'neto of the engine; l designates the magneto driving shaft, which is arranged transversely to the crank shaft and is driven therefrom through the cam shaft (not shown) and spiral gears e.

)teferring to Figs. 2 and 3 in connection with Fig. l, f designates the armature shaft i of the. magneto, the angular adjustment of which relative to the shaft or member by or Specification of Letters Patent.

Patented Aug. 22, 1916.

semi No. 630,629. ,I

'from which it is driven, it is necessary or desirable to make or change with accuracy. It is mounted inapproximater alinement with the driving shaft or member cl, with which it is connected by a coupling of the Oldham type, to compensate for any inaccuracy in aiinement of the connected members and to prevent binding and excessive' wear.

The coupling comprises collars or coupling pieces g and h, formed or provided with loosely engaging cross tongues and grooves, rotatably connecting them with each other and with the driving shaft d so that while the driving and driven members v may be more or less out of axial alinement, the collar or coupling piece f/ will slip transversely and permit each of them to rotate freely without binding in their bearings.

The driven shaft f is formed or provided with a circular series of teeth concentric with its axis and adjacent to one end thereof.

on`the periphery of a collar a' which is fas- 'In the present case these teeth are formed tened on the shaft or memberf by a key'j l'and by la nut andj washer c, as shown in.

Upon the hub of the toothed collar i the collar or coupling piece la, is revolubly fitted and it is lsecured in adjusted position thereon by a toothed dogrv or clamp'l, fitting into a longitudinal recess in the periphery of the collar IL, in which it is fastened by a Y screw m in engagement with the teeth of the collar z'. j j

The collar g is formedor provided-on one side with cross tongues n, `fitting vinto and loosely engaging corresponding grooves 0 in the adjoining face of the collar It. On the opposite side at right l angles'to the tongues n, the collar g is formed with grooves fitting and loosely tongues 7/ on the adjoining face of a collar 7, which is' fastened to the adjacent end of the driving shaft Il. Obviously the tongues may he formed or provided on any of the connected parts and the grooves with which they engage in the adjoining part, and in place of forming or providing a tongue or groove on a collar f/ fastened on the shaft cl, it may he formed on the shaft itself.

By loosening the screw m sufficiently to permit the disengagement of the dog or clamp Z from the teeth of the collar z', the shaft f may be turned and its angular adjustment relative to the shaft d easily engaging "1 changed without disturbing other parts of the coupling or connected mechanism. When the desired adjustment has been made, the parts are secured in their adjusted relation to one another by tightening the screw m and thereby binding the dog or clamp l upon the teeth of,collar z'.

Various modifications in the details "of construction and arrangement of thcf 'oomponent parts of the device may be made i without departure from the principle of the invention. n

claim y:

1. The combination with rotary drivingl and driven members arranged in approximate alinement with each other, one of them being provided with a series of teeth concentric with its axis, of coupling pieces having loosely engaging cross tongues and grooves connecting them .with each other and with the other member, one tongue and groove connection being transverse to the other and one of said coupling pieces being mounted and capable of angular adjustment on the toothed member, and a. clamping piece adapted to be fastened to the angularly adjustable coupling piece in engagement with the toothed member.

2. The combination with rotary driving and driven members arranged in approximate axial alinement with each other, of a toothed collar fixed on one of'said members, coupling pieces havingloosely engaging cross tongues grooves connecting them with each other and with the other member, one tongue vand groove eonneetion being transverse to the other and one of said coupling pieces being mounted and 4capable of angular adjustment on S'aid toothed collar and having a longitudinal recess in its periphery, a toothed dog removably fitted in the peripheral recess of the angular-ly adjustable coupling piece, and a screw detaehably securingr the dogr in the recess of said adjustable coupling piece, the dog being.

adapted when so Secured, to engage with said toothed collar for holding said connected parts in the desired adjusted angular reetion to each other.

In witness whereof I hereto my signature in presence of two witnesses.

' IELS A. CHRSTENSEN.

l/Vitnesses E. RlTTNEn, J. Jonss'rom 

